got hold of two gearboxs for my classic 5 speed,both come with the matching diffs,not sure which one to fit as have been told the one has quite high gearing,gearbox codes are ty754vbaaa with matching LSD rear diff so ive been told,and the other one is ty754vn1aa with matching rear diff,anybody have either of these in there car and what are they like,
cheers

 

VB is an Import box, short ratio. VN is a UK box longer gearing.

Basically if you spend a lot of time on the motorway then I'd go for a UK box, but for acceleration I'd go Japanese.

Either way you'll need the diff for what ever box you want, what ever type of box you currently have.

 

cheers for that,they both have the diffs with them the one with the import box is a LSD so ive been told,just wanted to find out what sort of top end the import box will do as the uk box might be too high geared im thinking,

 

TY754VBAAA 3.166 1.882 1.296 0.972 0.738 4.444
TY754VN1AA 3.454 1.947 1.366 0.972 0.738 3.9

Chuck the ratios in here.
http://www.catherineandken.co.uk/sti/tyres.html

Both have LSD rear diffs, and centre diffs, they both have open front diffs.

 

Cheers for that,still can't decide which one to use ????
Someone help me!!!!lol

 

import box if it were me

Gain in acceleration, mid range the same but have a bit more in gear pull top end.

 

Import box if it was me,will make a nicer fast road car and are generally stronger and have less miles on them.

 

In my opinion for what its worth,

The ty754vbaaa box is fitted standard on a p1/ sti5 and 6 versions,
The ty754vn1aa is standard in equivalent v5/6 uk/euro spec.

I,d fit the import box and matching 4.444 diff if i had the choice as long as its in good condition .
5th gear is still 0.738:1 so cruising wont be an issue,

The 5th gear in my old Ra g-box i had in my previous wagon was 0.972:1 ,
i was around 3800rpm at 80 mph from memory,would have probably topped out at 120 mph roughy on track max.......

 

i found import boxs to be the better for the subaru unless you do motorway miles as stated

 

import box it is then????